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Poster: skits818 Date: Nov 15, 2005 8:57pm
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

I've had the same problem with audio pops every couple seconds.

I downloaded 5 movies, and all of them were messed up.

They Made Me A Criminal
Atom Age Vampire
Carnival of Souls
The Terror
Nightmare Castle

These were the biggest file size MPEG-4s.

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Poster: skits818 Date: Nov 16, 2005 6:20am
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

FYI I realized I hadn't tried out They Made Me A Criminal. That one actually works! No audio pops!


Just out of curiosity, why aren't high resolution MPEG-4s available?

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Poster: Administrator, Curator, or Stafftracey pooh Date: Nov 17, 2005 2:57am
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

good to know!
the 256kb one was made with the new encoder.
FYI: that rez is 320x240, which is pretty hi res for the
target bitrate of 256kb/s (and was the standard size that
all 256kb mp4s used to be created as).


taking a step back, i think it's SUPERGREAT
that folks with ipod video 21st century toys are watching
1939 B&W films! 8-D

--tracey

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Poster: Administrator, Curator, or Staffakb Date: Nov 20, 2005 11:17pm
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

I tried rederiving the Cinemocracy items w/ the new encoder. It created mp4 versions but not mpeg1 versions. It looks like ffmpeg doesn't support the audio codec in the uploaded file.

Does your ffmpeg have liba52 support?

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Poster: Administrator, Curator, or Stafftracey pooh Date: Nov 27, 2005 5:39pm
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

as you know, we recently upgraded the mpeg4 deriving
to use mplayer (for audio conversion).

our mpg1 derivation is older -- i can try upgrading its
audio to the kind we do now in mpg4 if you reply with
an identifier or two that you'd like me to test it on...

--tracey

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Poster: Administrator, Curator, or Staffakb Date: Nov 28, 2005 12:25am
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

Here are a couple:

http://www.archive.org/details/BattleOfMidway
http://www.archive.org/details/BattleOfBritain

thanks

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Poster: Administrator, Curator, or Stafftracey pooh Date: Dec 3, 2005 10:06am
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

ok, so at first i didn't think the mplayer usage was working,
but now it seems to be working fine (so not sure what made
me think it wasn't working at first).

i'm deploying it now (as it extracted BattleOfMidway audio
just fine -- and quicker than ffmpeg would ever do, too boot!)

if you don't mind, if you see any "bad" mpeg1 derives from today going forward, please let me know if you are able.

thx!
--tracey

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Poster: Administrator, Curator, or Staffakb Date: Dec 17, 2005 3:30am
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

Here's a new one that is missing its mpeg1 derivative.

http://www.archive.org/details/Metropolis_0

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Poster: Administrator, Curator, or Stafftracey pooh Date: Dec 17, 2005 4:54am
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

yah, looks like ffmpeg pooped out in the final "stapling"
of the audio + video portions.

you could try one more derive to see if it's a repeatable
error (i suspect it is -- ffmpeg is more picky than mplayer)
or works. if error repeats, we prolly cannot generate a
mpeg1 at this time for that movie for some reason (that i suspect is not related to the mplayer audio extraction -- might be something in the video or video header...)

--tracey

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Poster: Administrator, Curator, or Staffakb Date: Dec 17, 2005 8:08am
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

The problem seems to be that the uploaded mpeg2 file does not have an audio track so the final step fails. My guess is the uploader stripped the audio because of copyright.

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Poster: Administrator, Curator, or Stafftracey pooh Date: Dec 21, 2005 4:28am
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

ah, great, thx for that.
trying rederive now with 'not live yet' MPEG1 deriver
code for when MPEG2 has no audio...

-t

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Poster: Administrator, Curator, or Stafftracey pooh Date: Dec 21, 2005 5:50am
Forum: movies Subject: Re: iPod + Video and Archive MPEG4 Files

ok, firing off derive on Metropolis_0 now
with new live code..
-t